Fire Retardant, Halogen Free Polyamide Conduit Sealing Ring For Zs Coupling As Per Rcf Spec No. Edts105, Rev-E With Amndt 1, 2 & 3; Drawing No. Lw71301, Item 30. Brands: Concord Control Systems Limited, Maa Laxmi Industry, Om Namah Shivaya Enterprises, Prime Electronics, S. Internationals Or Any Ot Her Rdso/Rcf/Icf Approved Sources. [ Warranty Period: 30 Months After The Date Of Delivery ] ]